Home / 18,819.92-25,966.90-10,862.13

Finding the Fourth Proportional to 18,819.92, 25,966.90 and 10,862.13

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Solution

The fourth proportional to 18,819.92, 25,966.90 and 10,862.13 is: 14,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.92 : 25,966.90 = 10,862.13 : x
  2. Step 2: Convert to fraction form
    18,819.92/25,966.90 = 10,862.13/x
  3. Step 3: Cross multiply
    18,819.92x = 25,966.90 × 10,862.13
  4. Step 4: Simplify right side
    18,819.92x = 282,055,765.90
  5. Step 5: Solve for x
    x = 282,055,765.90/18,819.92
  6. Step 6: Final answer
    x = 14,987.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.